The United States has suspended a shipment of weapons to Israel, including heavy bombs the US ally used in its campaign against Hamas in Gaza which has killed more than 34,000 Palestinians, Reuters reports.

Washington paused one shipment consisting of 1,800 2,000-pound (907-kg) bombs and 1,700 500-pound bombs, according to US officials.

Four sources said the shipments, which have been delayed for at least two weeks, involved Boeing-made Joint Direct Attack Munitions, which convert dumb bombs into precision-guided ones, as well as Small Diameter Bombs (SDB-1).

The SDB-1 is a precision-guided glide bomb that packs 250 pounds of explosive. They were part of an earlier approved shipment to Israel, not the recent $95 billion supplemental aid package the US Congress passed in April.